The fatal stabbing of a psychiatrist during the ritual summoning of a demon pulls Piet and his team deep into the esoteric world of Ritual Magic, where mystical beliefs conceal a wealth of hidden rivalries and dark secrets.

The use of an Indonesian ceremonial sword as a murder weapon takes Van der Valk and the team deep into the world of colonial museum artefacts and the thorny issue of restitution - with an unlikely link to the cold case.

It's a new day and a new dawn as Van der Valk welcomes two new Sergeants to the team - impulsive hotshot Eddie Suleman and technical whizz Citra Li.